Abstract:
The research aims to 1) create online lessons using inquiry-based learning to promote creativity skills in grade 11 for design and technology courses, 2) compare students' learning achievement after learning with online lessons using a 70% threshold, and 3) evaluate creative skills after learning with online lessons. The study's samples consisted of 261 high school students in grade 11 at Debsirin Nonthaburi School during the second semester of the academic year 2023. Data were analysed using statistics such as percentage, mean, and standard deviation. Statistical tests, such as the t-test, were used to test hypotheses. The results of this investigation are as follows: 1) The development of online lessons using inquiry-based learning to promote creativity skills in design and technology courses in grade 11 of contains the first page of the lesson, lessons, Units 2-3, worksheets, and quizzes. was found to be at a high level (average = 4.27), 2) The comparison of the learning achievement of students after learning with online lessons has academic achievement higher than the 70% threshold with statistical significance at the.05 level, and 3) The student's creative skills appeared after studying with the online lessons.